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Fault location of 500kV line in Hunan Province

2018/5/16 11:58:29  view Category:Monitoring and testing products



Serial number

Voltage level

Line name

Fault rod
(tower)

Trip date

time

Reason for
 the trip 1

Reason for
 the trip 2

Remarks

Traveling wave
positioning point

1

500

Long ship I return line

#222

January 23rd

15:59

External force destruction

Mountain fire

223224

2

500

Purple I line

#294-#295

January 31st

13:44

External force destruction

Mountain fire

01-31 13:44 13:44 line: 500kV purple Zong I line C phase tripping, coincidence failed to jump three phases. The network regulation informed Zion I line that the distance between Zong Yuan and Zong Yuan 7.5km was electrified, which had been announced by the network construction company. The purple Zong I line was successfully delivered at 17:54.

294

3

500

Ancient I line

#193-#194

January 31st

14:32

External force destruction

Mountain fire

01-31 14:32 14:32 line: 500kV ship ancient I line A phase trip, coincided successfully. The notifications have been sent to the I line from the ship's 50km line. The results showed that there were obvious flashover traces between the #193-#194 tower third and the fourth spacers, which was judged to be caused by mountain fires.

191

4

500

II line of complex sand

#205-#206

January 31st

15:41

External force destruction

Mountain fire

01-31 15:41 15:41 line: phase 500kV tripping of II line. 18:20, Sha Ping change report, Sha Ping change sand II line 5021, 5022 line block detector burn out inspection. At 20:21 the net transfer operation of the II line of the sand is overhauled. At 23:02, there was no damage to the tuning device of the wave blocking II line of Sha Ping substation, and there was no spare parts at present. The II line of the reclaimed sand could not be recovered in short time. At 12:20 on February 2nd, the damage defects of the wave tuning device of the Sha Ping substation and the II line were recovered. At 13:58, the II line was transferred to operation.

205

5

500

Suzhou Su I line

#267

February 14th

13:38

Ice flicker

Melting ice flashover

02-14 13:38 13:38 line: Ship Su I line B phase trip, coincided successfully.

267

6

500

Long ship I return line

#56

March 26th

15:22

Lightning strike

Winding

03-26 15:22 15:22 line: 500kV long ship I line C phase trip, coincided successfully. At 16:17 o'clock, Changyang paving, Chuanshan reported long ship I line on both sides of the 931 light difference, 802 type longitudinal distance, zero sequence protection action C phase, coincide successfully. (CC2000 correctly pushed the picture; D5000 only pushed the Changyang paving tripping screen, and the boat didn't push the picture. At 17:32 the network has been informed of the network construction of a live line patrol line.

56

7

500

Five people's line

#187

May 25th

2:34

Lightning strike

Winding

The fault point is identified as lightning flashover on insulator on the front side of phase 187 B.

186

8

500

Artemisia

#336

June 1st

14:19

Lightning strike

Winding

The fault points are obvious signs of flashover on the side pressure ring of the 336 C phase insulator string and the side pressure ring of the conductor side.

318,335

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